Seiko Cal. 5617 - 321

This Spring Drive model from 1968 features a 42mm Two-Tone case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-06670238b028]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1968

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